﻿// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using System;
using System.CodeDom.Compiler;
using System.IO;
using ICSharpCode.Core;
using ICSharpCode.SharpDevelop;
using ICSharpCode.SharpDevelop.Project;

namespace ICSharpCode.TextTemplating
{
	public class TextTemplatingFileGenerator : TextTemplatingFileProcessor, ITextTemplatingFileGenerator
	{
		public TextTemplatingFileGenerator(
			ITextTemplatingHost host,
			FileProjectItem templateFile,
			ITextTemplatingCustomToolContext context)
			: base(host, templateFile, context)
		{
		}
		
		public void Dispose()
		{
			Host.Dispose();
		}
		
		public void ProcessTemplate()
		{
			ClearTasksExceptCommentTasks();
			SetNamespaceHint();
			if (TryGenerateOutputFileForTemplate()) {
				AddOutputFileToProjectIfRequired();
			}
			AddAnyErrorsToTaskList();
			BringErrorsToFrontIfRequired();
		}
		
		void SetNamespaceHint()
		{
			var namespaceHint = new NamespaceHint(TemplateFile);
			SetNamespaceHint(namespaceHint.ToString());
		}

		bool TryGenerateOutputFileForTemplate()
		{
			string inputFileName = TemplateFile.FileName;
			string outputFileName = GetOutputFileName(inputFileName);
			return TryProcessingTemplate(inputFileName, outputFileName);
		}
		
		void AddOutputFileToProjectIfRequired()
		{
			AddOutputFileToProjectIfRequired(Host.OutputFile);
		}
		
		string GetOutputFileName(string inputFileName)
		{
			return Path.ChangeExtension(inputFileName, ".cs");
		}

		bool TryProcessingTemplate(string inputFileName, string outputFileName)
		{
			try {
				return Host.ProcessTemplate(inputFileName, outputFileName);
			} catch (Exception ex) {
				AddCompilerErrorToTemplatingHost(ex, inputFileName);
				DebugLogException(ex, inputFileName);
			}
			return false;
		}
	}
}
